Thermo Electron BBD 6220 - Manual CO2 Measuring System Calibration

Switching function: Manual zero calibration of CO
2
measuring system
Recommendation: Check the CO
2
concentration, especially during long-term tests.
If there is a large deviation (± 0.5 %) between the displayed actual value for CO
2
concentration
and the nominal value, the measuring system can be recalibrated during operation.
Example: Display: 5.0 % CO
2
Comparative measurement: 4.2 % CO
2
Instruction Entry / Keys / Remarks Display / Remarks / Status
Select function level 3
Hold down
Indicator lamp "control" flashes and
the current function level is indi-
cated on the flashing display
+
or Press
°C
Display zero point Release and press
again
°C
CO
2
Enter determined CO
2
con-
centration
+
or Press
°C
CO
2
Start calibration
process/exit function level
Release
i
Press
"CAL" is briefly displayed.
The corrected actual value is then
displayed
6. OPERATE
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